img {
  width: 15rem;
}

/* 指示器样式 */
#divPoint > span {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 0.2rem solid #777;
  border-radius: 50%;
  background-color: #000;
  cursor: pointer;
}

#divPoint > span:hover {
  background-color: #fff;
}
